[jira] [Created] (TIKA-3551) TikaConfig: unspecified attribute of "xml-reader-utils" breaks configuration file parser

["Sebastian Nagel (Jira)" <ji...@apache.org>]

Sebastian Nagel created TIKA-3551:
-------------------------------------

             Summary: TikaConfig: unspecified attribute of "xml-reader-utils" breaks configuration file parser
                 Key: TIKA-3551
                 URL: https://issues.apache.org/jira/browse/TIKA-3551
             Project: Tika
          Issue Type: Bug
          Components: config
    Affects Versions: 2.1.0, 1.27
            Reporter: Sebastian Nagel


The Tika configuration file parser exits with an exception when the XMLReaderUtils are configured in tika-config.xml without specifying all possible attributes, eg. without the attribute maxEntityExpansions (to use the default value):

{noformat}
<xml-reader-utils poolSize="20" />
{noformat}

There's a test whether the attribute value is null - however, [getAttribute()|https://docs.oracle.com/javase/8/docs/api/org/w3c/dom/Element.html#getAttribute-java.lang.String-] returns the empty string if the attribute is not present. The empty string then causes a NumberFormatException:

{noformat}
2021-09-14 09:57:12,357 ERROR o.a.n.p.t.TikaParser [main] Problem loading custom Tika configuration from tika-config.xml
java.lang.NumberFormatException: For input string: ""
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[?:?]
        at java.lang.Integer.parseInt(Integer.java:662) ~[?:?]
        at java.lang.Integer.parseInt(Integer.java:770) ~[?:?]
        at org.apache.tika.config.TikaConfig.updateXMLReaderUtils(TikaConfig.java:303) ~[tika-core-1.25.jar:1.25]
        at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:192) ~[tika-core-1.25.jar:1.25]
        at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:182) ~[tika-core-1.25.jar:1.25]
        at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:157) ~[tika-core-1.25.jar:1.25]
        at org.apache.nutch.parse.tika.TikaParser.setConf(TikaParser.java:276) [parse-tika.jar:?]
{noformat}





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